36 packs per box
Return of the King is the initial release of the King block. It focuses on characters of royal descent like Eomer and Aragorn.
The first of three expansions making up the "King block," The Return of the King will introduce new game mechanics called "threats" amd "initiative", a new site path, new versions of all the Fellowship members, Arwen, and Elrond, and new characters such as Denethor (already seen in a preview version). Cards will support both the open tournament format (including Fellowship, Tower, and King blocks) and the King block format.
As the base set of the King block, The Return of the King will have a configuration similar to that of The Fellowship of the Ring and The Two Towers. It will include two different playable 63-card starter decks, featuring Aragorn and Eomer, and 11-card booster packs with 1 rare and a mix of common and uncommon cards. A foil from the complete parallel diffraction foil set will replace a common card in approximately one in six booster packs. All starters and boosters contain only cards from The Return of the King expansion.